Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Lake Park
Adding square footage to a Lake Park home usually means one of two things: you’re either planning for an aging parent or adult child moving in, or you’re looking to create rental income from a property that’s suddenly very desirable given Lake Park’s position along the Lake Worth Lagoon. Either way, the work has to account for flood zones, wind codes, and 1950s construction that predates modern building standards. That’s where we come in. Barrett & Sons Construction has been building additions and ADUs in Palm Beach County for over 29 years, and we know exactly what Lake Park’s specific regulations and housing stock demand. Call (877) 610-1318 to schedule a free estimate.
Why Barrett & Sons Construction Is Lake Park’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews today. That means when you call about a second story addition on 10th Street or a detached ADU near Lake Shore Drive, you’re talking to someone whose name is on the truck and who lives close enough to drive through Lake Park on the way home. Our Home Additions & ADU team has handled everything from junior ADUs inside existing CBS homes to full detached units in backyards along the Intracoastal.
We’re not a franchise. Every estimate comes with a written scope, every price change arrives as a written change order before work starts, and every job is backed by the 90-Day Done Right Promise. If something isn’t right, Tom comes back and makes it right. One call. That’s the whole promise, and it’s written on the contract, not hidden in fine print.
Lake Park homeowners tell us the same story again and again: a previous contractor quoted one number on the phone, then handed them a different bill at the door. We don’t work that way. Tom Barrett publishes his name, address, and license number. Look it up before you sign anything. And if you want a second opinion on any written estimate you’ve received, we’ll give you one free. No trip charge inside the county.
Our Home Additions & ADU Services in Lake Park
ADU Design & Permitting
Building an ADU in Lake Park means navigating FEMA flood zone rules before you ever break ground. A large share of town sits inside AE zones, and the NFIP’s “substantial improvement” rule, the 50% threshold, can turn a straightforward garage conversion into a mandatory elevation project. We handle the design and the permitting so you don’t end up surprised by a letter from the town saying your $60,000 project just became a $200,000 one. Every permit gets pulled, and every inspection gets signed before we call the job done.
Garage Conversion ADU
Plenty of Lake Park’s mid-century homes have attached garages that sit empty or hold storage. Converting one into a rentable unit or an in-law suite makes sense in a town this close to the water. But those garages were built in the 1950s through 1970s, often on slabs at or near grade, with no hurricane strapping and no impact glass. Bringing them up to current Palm Beach County code is part of the work, and we price it honestly from the start. A garage conversion in Lake Park typically lands between $30,000 and $80,000 depending on whether you’re adding a kitchen and bath.
New Detached ADU
A new detached ADU on your Lake Park lot gives you a clean slate: you’re building to current wind-load standards from day one, not remediating someone else’s pre-code work. That said, setbacks, lot coverage limits, and flood elevation requirements get strict fast. We design around them. Expect $90,000 to $220,000 for a detached unit with a bathroom and kitchenette, including impact-rated windows and hot-dipped galvanized hardware that won’t corrode in the salt air off the Intracoastal.
Junior ADU & Interior Conversion
Not every ADU needs its own kitchen or separate address. A junior ADU inside your existing home, think a converted den with a kitchenette and a private entrance, is often the most economical route in Lake Park. It keeps you under the 50% threshold more easily and avoids the site work that a detached unit requires. We’ve done several of these in the 33403 area, and the permitting path is simpler than most homeowners expect.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Lake Park
When we install windows or doors on a Lake Park addition, we use name-brand products you can look up yourself: Simonton, PGT, and Ply Gem. The PGT impact-rated lines are especially common on homes near the Intracoastal, where high-velocity hurricane zone requirements demand 170+ mph design wind ratings. Additions on slab-on-grade CBS homes almost always surface original single-pane jalousie windows that have to go, and we’d rather install something that’s in stock locally and backed by a real manufacturer’s warranty than a mystery brand off a van. If your project also touches the existing kitchen or bath, we handle Kitchen Remodeling in Lake Park and Bathroom Remodeling in Lake Park with the same written-change-order discipline.
Common Home Additions & ADU Problems We See in Lake Park Homes
- The 50% substantial improvement trigger: A kitchen gut renovation or a room addition on a slab-on-grade CBS home can cross the NFIP threshold and legally require elevating the entire structure above Base Flood Elevation. This happens far more often in Lake Park than in the higher-elevation neighborhoods of North Palm Beach or Palm Beach Gardens, and it’s the single biggest cost surprise we see.
- Salt air corrosion: Anchor bolts, rebar, and metal connectors on original 1950s-70s construction are often rusted to the point of failure. We use hot-dipped galvanized or stainless hardware as standard practice here, not as an upsell.
- Pre-code windows and roof tie-downs: Original jalousie and single-pane windows don’t meet current wind-load or impact-resistance requirements, and many older roofs lack proper hurricane strapping. Any permitted addition forces these issues to the surface.
- Low-lying lots and summer rain: King tides and heavy summer downpours regularly inundate low-lying lots in Lake Park, which complicates concrete pours, excavation timelines, and erosion control on active job sites. We schedule site work around the weather, and we write that into the scope.
Pricing for Home Additions & ADU in Lake Park, FL
A full home addition in Lake Park typically runs $45,000 to $130,000 depending on size, foundation work, and whether the existing structure triggers flood-zone remediation. ADU construction ranges from $90,000 to $220,000 for a new detached unit, while a garage conversion lands between $30,000 and $80,000. Here’s a closer look at what drives those numbers:
- Home Addition: $45,000-$130,000
- ADU Construction: $90,000-$220,000
- Garage Conversion ADU: $30,000-$80,000
- Junior ADU / Interior Conversion: $25,000-$70,000
The biggest variable in Lake Park is flood-zone compliance. If your project crosses the 50% threshold, elevation costs can add $150,000 or more. We tell you this on the first call, not after demolition starts. Call (877) 610-1318 for a written, line-item estimate. Estimates are free, and the price won’t change unless a change order is signed first.
We Also Serve Cities Near Lake Park
While this page focuses on Home Additions & ADU in Lake Park, our crews regularly work in Riviera Beach, North Palm Beach, Palm Beach Gardens, and Palm Beach. Each municipality has its own permitting quirks, and we know them all. If you’re a few blocks outside the 33403 line, call anyway. There’s no trip charge inside the county, and you’ll get the same written scope and 90-Day Done Right Promise.
Serving Lake Park, FL - Our Local Coverage Area
We’re based in the Lake Park area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Home Additions & ADU in Lake Park
We can usually have someone at your Lake Park home within one to two business days to look at the site and talk through your project. A live person answers the phone 24/7, so you can call (877) 610-1318 and set a time that works for you. For design work and permit planning, initial drawings typically take two to four weeks depending on how fast the town reviews your application.
Yes. Every eligible job includes permits pulled and inspections signed. Lake Park’s position along the Lake Worth Lagoon means many homes sit in FEMA AE zones, and we handle the flood elevation documentation, the substantial improvement analysis, and everything else the town requires. We never tell a customer permits are optional, because they aren’t.
Only if a written change order is signed first. Every scope, every allowance, and every price change arrives on paper before work proceeds. Tom Barrett has a saying: an allowance that isn’t on paper is a surprise waiting for a date. We don’t do surprises. If we find rot, corrosion, or pre-code conditions during demolition, we’ll show you what we found and give you a written price before we touch it.
Lake Park’s flood-zone exposure and aging mid-century housing stock make certain costs run higher than in North Palm Beach or Palm Beach Gardens. Compliance with FEMA’s 50% substantial improvement rule can add five figures or more to a project that would be straightforward a few miles inland. We quote Lake Park projects specifically, not a generic county-wide number, because the site conditions here are genuinely different. Call (877) 610-1318 for an exact quote, free.
Every job is backed by the 90-Day Done Right Promise, written on the contract. If something isn’t done right within that window, Tom Barrett comes back and makes it right, one call. Beyond that, manufacturer warranties apply to the products we install: Simonton, PGT, Ply Gem, CGI, and the rest. You’ll have those warranty documents in hand before we close out the job.
Ready to talk about your Lake Park addition or ADU? Call (877) 610-1318 today to schedule a free estimate. We’ll walk the site, give you a written scope and a line-item price, and tell you honestly what’s involved before you spend a dime.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Lake Park since 1998.